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The Dolphins are presumed to be targeting Steelers free agent receiver Mike Wallace this offseason because he’s blazing fast, has caught 32 touchdowns in four seasons and will arguably be the best receiver available on the market.

The Dolphins certainly might make a big push for Wallace, but their reported interest in him is just dot-connecting at this point – no one with any real authority inside the Dolphins facility would leak the team’s intentions with two weeks to go until free agency.

A whopping 10 receivers clocked a 4.45 or faster on Sunday, and five were under 4.4. And these weren’t just track athletes who strapped on football pads, like in previous years – like 2011, for instance, when the top times were recorded by non-Division I players (Clyde Gates, Ricardo Lockette), or 2012, when the top times were recorded by a trio of really raw receivers (Travis Benjamin, Stephen Hill and Chris Owusu).

The fastest time on Sunday was recorded by an athlete who is more sprinter than football player – Texas’ Marquise Goodwin, an Olympic long-jumper and college sprinter who clocked an eye-popping 4.27 in the 40-yard dash but caught just 26 passes in 2012 – but he was followed by some of the top receivers in the draft.

West Virginia’s Tavon Austin, who had 2,910 all-purpose yards and 17 touchdowns in 2012, may have boosted himself into the top half of the first round after clocking a 4.34. Texas A&M’s Ryan Swope, who was Ryan Tannehill’s favorite target in 2011, may have jumped from a mid-round to a second-round pick with a 4.34, as well.

Next up were a couple of solid mid-round options in Oklahoma’s Kenny Stills (4.38, 82 catches and 11 touchdowns in 2012) and TCU’s Josh Boyce (4.38, 66 catches and seven touchdowns), followed by arguably the top receiver prospect in the draft, Tennessee’s Cordarrelle Patterson (4.42, 10 total touchdowns).

Wallace, by comparison, ran a 4.33 in the 2009 draft. But he could cost a team anywhere between $27-36 million in guaranteed money over the next three years, while the rookies, if drafted in the second round or later, will cost near the NFL minimum over the next four years. And as mentioned before, Sunday’s top performers weren’t just track stars, as in previous years. These are some of the top receivers in the draft, who also happen to be blazing fast.

The Dolphins have said several times that they plan to build their team through the draft and supplement the roster with free agent additions. Drafting speed, instead of overpaying for Wallace, could be a much smarter use of salary cap dollars.

2. Dolphins not interested in Greg Jennings?

Speaking of dot-connecting, us media folks have connected another dot this offseason: That the Dolphins will be interested in potential free agent-to-be Greg Jennings, because he previously played at a Pro Bowl level for the Packers when current Dolphins coach Joe Philbin was their offensive coordinator.

It’s the same rationale that was used last offseason with quarterback Matt Flynn: The Dolphins needed a quarterback, Flynn played well in limited action under Philbin in Green Bay, therefore the Dolphins would sign him.

Of course, we all saw how that worked out. The Dolphins showed tepid interest in Flynn based on Philbin’s inside knowledge, and let him sign with Seattle. And the same may happen with Jennings this offseason.

Again, no one has more inside knowledge of Jennings than Philbin does. Don’t presume that just because Philbin coached him before means he wants to coach him again.

3. Dolphins have one week left to use the franchise tag.

GM Jeff Ireland said at the Combine that there is “certainly a likelihood” that the Dolphins will use the franchise tag on one of their impending free agents, and he has one more week to do so.

The deadline to apply the franchise tag for next season is Monday, March 4 at 4 p.m. Any player slapped with the tag will remain the Dolphins’ property for 2013, and will be guaranteed a one-year salary that pays him the average salary of the top five players at his position over the past five years.

The top candidates to receive the Dolphins’ tag: DT Randy Starks (tag number: $8.31 million), CB Sean Smith ($10.677 million) and LT Jake Long ($15.36 million). The tag gives the Dolphins a lot of leverage in contract negotiations with the players, and Ireland will be busy negotiating with all three players this week to see if they can agree to a team-friendly long-term contract extension.

If they can agree to a three- or four-year deal with Starks, for example, it could open the door to Smith or Long getting the tag – which seems unlikely, given their disproportionately high franchise numbers. But nothing can be ruled out at this point.